In early England, the king had no army of his own. As soon as the king called during the war, the feudal lords called the militia to the battlefield. The nobles objected to the king having his own standing army because it would pose a threat to them.
However, this rule was broken in the17th century. We all study high school history, and the king and parliament have contradictions. The new model army led by Cromwell defeated the king's army. Because Cromwell had a gun in his hand, he simply killed the king, monopolized power and practiced military dictatorship, which made Britain suffer a lot.
When the British royal family returned to power, Parliament simply dissolved the British army because of Cromwell's warning. Later, with the maturity of British constitutionalism, the power of the king was not so great, and the royal family became an honorary title. Not only the air force and navy, but even hospitals and schools can be named after the royal family, but the army. Due to the year,
Defended the local air defense safety, smashed the Nazi sea lion action, consumed part of the German air force, and made a certain contribution to the comprehensive air defense of the allied forces.
Take Britain as an example. The name of the government is Her Majesty's Government, and the police are Royal Police, Royal Air Force, Navy, QC and so on.
There is still a king at the head of the state power. When exercising political power, the government will always think that it is not the supreme ruler and has a king on its head, so it will not do anything excessive. Moreover, the deeper this concept is in the hearts of the British people, the more loved the king in peacetime, and the greater the deterrent effect. In the case of totalitarian government, it is time for the king to lead the people against it.